Dovecotでpop3またはimapに接続できません
サーバーで接続が拒否されました。注：ここでは、localhostから接続しようとしています。
テストに使用しようとしているコマンド：
user@hostname:~$ telnet localhost pop3
Trying ::1...
Trying 127.0.0.1...
telnet: Unable to connect to remote Host: Connection refused
Imapで試しても同じエラーが発生します。
dovecot wiki は、問題のトラブルシューティングを示唆していますが、すでに修正を試みています。 configにプロトコルを追加し、listenオプションを*に設定しています。私の設定は以下です。何が間違っているのか分かりませんか？ ## Dovecot設定ファイル
# If you're in a hurry, see http://wiki2.dovecot.org/QuickConfiguration
# "doveconf -n" command gives a clean output of the changed settings. Use it
# instead of copy&pasting files when posting to the Dovecot mailing list.
# '#' character and everything after it is treated as comments. Extra spaces
# and tabs are ignored. If you want to use either of these explicitly, put the
# value inside quotes, eg.: key = "# char and trailing whitespace "
# Default values are shown for each setting, it's not required to uncomment
# those. These are exceptions to this though: No sections (e.g. namespace {})
# or plugin settings are added by default, they're listed only as examples.
# Paths are also just examples with the real defaults being based on configure
# options. The paths listed here are for configure --prefix=/usr
# --sysconfdir=/etc --localstatedir=/var
# Enable installed protocols
!include_try /usr/share/dovecot/protocols.d/*.protocol
protocols = pop3 pop3s imap imaps
pop3_uidl_format = %08Xu%08Xv
# A comma separated list of IPs or hosts where to listen in for connections.
# "*" listens in all IPv4 interfaces, "::" listens in all IPv6 interfaces.
# If you want to specify non-default ports or anything more complex,
# edit conf.d/master.conf.
#listen = *, ::
# Base directory where to store runtime data.
#base_dir = /var/run/dovecot/
# Name of this instance. Used to prefix all Dovecot processes in ps output.
#instance_name = dovecot
# Greeting message for clients.
#login_greeting = Dovecot ready.
# Space separated list of trusted network ranges. Connections from these
# IPs are allowed to override their IP addresses and ports (for logging and
# for authentication checks). disable_plaintext_auth is also ignored for
# these networks. Typically you'd specify your IMAP proxy servers here.
#login_trusted_networks =
# Sepace separated list of login access check sockets (e.g. tcpwrap)
#login_access_sockets =
# Show more verbose process titles (in ps). Currently shows user name and
# IP address. Useful for seeing who are actually using the IMAP processes
# (eg. shared mailboxes or if same uid is used for multiple accounts).
#verbose_proctitle = no
# Should all processes be killed when Dovecot master process shuts down.
# Setting this to "no" means that Dovecot can be upgraded without
# forcing existing client connections to close (although that could also be
# a problem if the upgrade is e.g. because of a security fix).
#shutdown_clients = yes
# If non-zero, run mail commands via this many connections to doveadm server,
# instead of running them directly in the same process.
#doveadm_worker_count = 0
# UNIX socket or Host:port used for connecting to doveadm server
#doveadm_socket_path = doveadm-server
# Space separated list of environment variables that are preserved on Dovecot
# startup and passed down to all of its child processes. You can also give
# key=value pairs to always set specific settings.
#import_environment = TZ
##
## Dictionary server settings
##
# Dictionary can be used to store key=value lists. This is used by several
# plugins. The dictionary can be accessed either directly or though a
# dictionary server. The following dict block maps dictionary names to URIs
# when the server is used. These can then be referenced using URIs in format
# "proxy::<name>".
nable to connect ... Connection refusedメッセージは、Dovecotがポート110でリッスンしていないことを強く示唆しています。
ps -A | grep dovecot
その場合、POPポートでリッスンしていることを確認します。
Sudo lsof -i 4 -a -p $(ps -A | grep dovecot | awk '{ print $1 }')
その場合、ファイアウォールが邪魔になっていないことを確認してください。
Dovecotが実行されていないか、POPポートをリッスンしていないことが判明した場合は、dovecotの設定が間違っている可能性があります。 dovecotおよびシステムログでエラーを確認します。 dovecot -nによる出力として、dovecotの構成を調べます。
ほとんどの場合、protocolsディレクティブまたはlistenディレクティブのいずれかを誤って設定しています。